[CentOS] Apache/Cluster issue -- Single public IP address

James Hogarth james.hogarth at gmail.com
Fri Jan 8 16:57:58 UTC 2010


Don't bind it to an IP (so listen shows 0.0.0.0) on either node of the
cluster? When the IP address is floated across it will still accept requests
on that then - in additional the the real node IP address.....

Given that you are talking a public IP address however it depends on your
network configuration and ISP setup...

2010/1/8 <avi at myphonebook.co.in>

> I want to set up a cluster that is used for web hosting (RHCS cluster).
> Recently,
> I experimented with a 2 node cluster and was able to run it successfully.
> However,
> I have started facing some issues with Apache, which I had configured as a
> service
> using the Cluster configuration tool. To do this Apache needs a floating IP
> address.
> This address is in addition to the network interface IP address. For
> example if my
> NIC IP is 192.168.1.1, then I need 192.168.1.2 as a floating IP address,
> and this
> has to be bound to apache. At least this is what I understood after several
> hours
> of experimentation. I also figured that if I configured 192.168.1.1 as a
> cluster
> resource and bound it to apache, the cluster manager failed to start apache
> and the
> NIC was put "off". ( In effect 192.168.1.1 was removed from the NIC ).
>
> However, the Apache service ran fine when bound to the ADDITIONAL IP i.e.
> 192.168.1.2
> ( the floating IP ).
>
> The above example was just a lab setup to test the cluster.
>
> My problem is that I only have a single public IP address, to serve my web
> server
> and my question is this:
>
> Is this the end of the road, for installing apache as a service with ONE
> public IP
> address??
>
> I am willing to give further info, if required.
>
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>
>
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